Definition of Oligodendrocyte

Oligodendrocyte: A type of cell in the central nervous system. The oligodendrocytes surround and insulate the long fibers (axons) through which the nerves send electrical messages.

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=7787
Last Editorial Review: 3/19/2012